A PurpleAir and a PurpleAir Flex air quality monitoring sensor was installed at a monitoring site in East Hartford, Connecticut to evaluate the sensors performance tracking PM2.5 data. PurpleAir data was corrected using the extended U.S-wide correction equation developed by the EPA to reduce bias in sensor data (more information found here: AirNow). Hourly data from 2023 was then compared to a T640 reference monitor located at the same location. The full dataset used can be downloaded here Download CSV.
| Sensor Type | Possible Configuration | Evaluated Configuration | Cost | Data Access | Power Supply | Considerations | Reference Monitor Compared |
| PurpleAir | |||||||
| PurpleAir Flex |
photos here
PurpleAir and PurpleAir Flex hourly data for PM 2.5, temperature and relative humidity were compared by quarter to reference values (Q1: January-March, Q2: April-June, Q3: July-September, Q4: October-December).